помогите решить A3!!!!!!!!!!. Created by lep111. algebra-ru

помогите решить A3!!!!!!!!!!...

lep111 @lep111

July 2022 2 9 Report

помогите решить A3!!!!!!!!!!

m11m

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!!!!!!!!!!!!!!!!!!!!!!!!

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DNHelper

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Координата вершины параболы по x находится по формуле $x_{0} = - \frac{b}{2a}$ . a = 1, x₀ = -2, тогда $b = -2ax_{0} = -2 * 1 * (-2) = 4$
Имея x₀, y₀, a и b, найдём c.
$c = y - ax^2 - bx = 3 - 1 * (-2)^2 - 4 * (-2) = 3 - 4 + 8 = 7$
Тогда b + c = 4 + 7 = 11

Ответ: 2) 11

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